I've been running with a size M grey pair of these for about 2 months, with a (measured) 32" waist. They're light and comfortable, and pretty much unnoticeable when running in typical conditions.

There are a few things that are a little off though:
- not sure what the tie string in the waistband is for - I've just about managed to get a knot into it, but I'm not sure what that actually achieves as it doesn't seem to make any difference to fit
- they ride up a little over the first quarter mile or so, I guess as my (Runderwear) merino boxers find their place. They don't seem to move after that, but can need manually moving back down 2 or 3 minutes into a run.
- they've got a bit of a funny shape in the genital area, in that they don't have any shape there - this means that they don't leave much to the imagination, and, in cold weather, don't give any air space between the end of your equipment and the shorts, which can result in the little chappy getting a chilly head, even through merino boxers. The shape of the shorts generally looks strange if you don't have a top covering the top half of them, due to the shapeless front.
- the size recommendation that Runderwear gives is definitely on the small side - they suggested an S for me, but I went for M, as I'm on the size guide boundary. I'm pretty sure an L would have been fine, if not better. This maybe depends on your upper leg circumference, but I definitely wouldn't want any smaller, and an L might have been adjustable in the waist using the seemingly-superfluous drawstring?!?

I would still certainly buy a second pair of these, even given the above minor faults, but they've been out of stock for months... when will they be back?!?

Very comfortable and light, generally a pleasure to wear. The waistband, though, is effectively unworkable, and my black shorts are quickly losing their colour, fading to grey.

They are light and they feel great...
However there are 2 major flaws:
- the pocket is too small and the zip is in the middle rather than top of it, so stuff are bound to fail when you open it. You can stretch it to put an iPhone or an S20 in it but it's difficult and when you do the next problem come in play
- the elastic band design is a nightmare. It's impossible to adjust properly once you're wearing the short and if you try mid run the knot has become so tight, you risk breaking a nail undoing it. If not adjusted tight enough, it is too weak to handle any weight in the pocket without the shorts falling off your hips... Massive design flaw here...

Five stars for the weight alone. Waistband is a curious one that’s difficult to microadjust, unlike traditional drawstring. I wish they came in a shorter length (even lighter!!!) like Nike Aeroswift which are still my go to shorts…could that change?!?

Seem like good quality lightweight shorts. I bought them to wear over running tights, though I also bought some runderwear boxers which I'll review separately. You do need something underneath them as the material is very thin, mesh in parts. The back pocket has both a zip and a plastic carabiner hook to put keys on, this seems overkill for lightweight shorts - if the pocket is designed well you probably don't need either (e.g. Lululemon's Surge shorts). The waistband has a single piece of string going round which I'm curious what to do with - if there were two bits of string you could tie them together, but just one piece is odd? A small loop has been stitched into the waistband at the front, again it's not clear what this is for.